Final answer:
The nurse should monitor for spontaneous ecchymosis as an adverse effect in a client who had a stroke and is receiving clopidogrel (Plavix), due to the medication's blood-thinning properties and associated increased risk of bleeding and bruising.
Step-by-step explanation:
A client who had a stroke is receiving clopidogrel (Plavix). The nurse should monitor for various adverse effects, but among the options provided, the most relevant to monitor for would be spontaneous ecchymosis. Clopidogrel is an anti-platelet medication that prevents blood clots, which could lead to another stroke or heart attack. However, because it affects platelet function and can increase the risk of bleeding, spontaneous ecchymosis, or easy bruising, can occur as an adverse effect.
In this context, while options such as repeated syncope, new-onset confusion, and abdominal distention are potential adverse effects of other medications or complications of the stroke itself, spontaneous ecchymosis is a direct adverse effect linked to the blood-thinning properties of clopidogrel. Monitoring for signs of abnormal bleeding or bruising is a critical aspect of the care for patients on clopidogrel therapy.